81135400

素因数分解:

$2^3\times 5^2\times {\mathrm{405677}}^1$

素因数の和:405693

約数の個数: 24

約数和(自身を含む): 188640270

約数和(自身を除く): 107504870

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 405677, 811354, 1622708, 2028385, 3245416, 4056770, 8113540, 10141925, 16227080, 20283850, 40567700, 81135400]

約数ペア:

[(1, 81135400), (2, 40567700), (4, 20283850), (5, 16227080), (8, 10141925), (10, 8113540), (20, 4056770), (25, 3245416), (40, 2028385), (50, 1622708), (100, 811354), (200, 405677)]